DNS Behind Firewall

[Leon Toh]

Hi All,

I require some help in setting up a DNS behind a firewall. Purpose of it is 
I will be running masquerading and it requires me to setup a DNS behind a 
firewall.

I have successfully configure DNS outside of firewall but have not done 
behind any DNS configuration behind a firewall before. Where can I find 
some information or guideline on how to achieve this.

Looking forward to some suggestion.

Thanks in advance.

Regards,
Leon